The pelage is brownish-fawn with a greyish undercoat; the underparts and legs are creamy white.

[3] The greater big-footed mouse is believed to be herbivorous and probably eats berries, fruit, nuts, seeds, roots, and stems.

It probably falls prey to such predators as snakes, birds and carnivorous mammals.

This is because, although it is fairly common in the area in which it is found, its total range amounts to a single block of less than 5,000 square kilometres (1,900 sq mi).

Its habitat is subject to degradation by fire and logging and the mouse is at risk of predation by feral animals.